License & Subscription Issues

Fix Cannot Access Excel or Word After Signing in to Microsoft 365

Olivia Miller Oct 1, 2026 870 views

Question details

Users are unable to open Excel or Word and are repeatedly prompted to sign in or repair the application after logging into Microsoft 365.

How to Fix Microsoft 365 When You Cannot Access Excel or Word

Product: Microsoft 365 Family
Device & OS: Windows
Scenario: Attempting to launch and use Word or Excel after signing into a Microsoft 365 Family account.
Observed behavior: The applications fail to open normally, displaying continuous prompts to sign in again or run an Office repair.

Before you start

Ensure you know the exact Microsoft account credentials associated with your Microsoft 365 Family subscription and save any open work before restarting your device.

Solution 1Recommended

Perform a Quick Repair for Microsoft Office

Use the built-in Windows repair tool to fix corrupted installation files or configuration errors preventing Word and Excel from opening.

A Quick Repair scans and replaces corrupted Office files without requiring an internet connection. This is often the most effective way to resolve persistent sign-in prompts and app crashes.

Restart Your Computer

Close all active applications and restart your computer to clear any temporary background processes that might be interfering with Microsoft 365.

Open Apps and Features

Click the Windows Start button, open Settings, and navigate to 'Apps' followed by 'Apps & features' (or 'Installed apps').

Modify Microsoft Office

Scroll down to find 'Microsoft Office' or 'Microsoft 365' in the app list. Click on it (or the three dots next to it) and select 'Modify'.

Run Quick Repair

Select 'Quick Repair' from the dialog box and click 'Repair'. Follow the on-screen instructions until the process finishes.

Verify Sign-In

Open Excel or Word again and confirm that the application is using the Microsoft account associated with your subscription.

Perform a Quick Repair for Microsoft Office

Account Authentication: Microsoft 365 authenticates through your Windows user account. Ensure your Windows account is properly linked to your Microsoft subscription.

Solution 2

Launch Apps from a Taskbar Shortcut

Creating a new taskbar shortcut can sometimes bypass launch glitches associated with corrupted Start menu shortcuts.

Free Microsoft Office alternative

Try WPS Office to Avoid Subscription and Sign-In Issues

If Microsoft 365 continues to trap you in sign-in loops or licensing errors, WPS Office provides a stable, lightweight, and completely free alternative. You can seamlessly open, edit, and save all your Word and Excel files without dealing with complicated account authentications.

1. Download WPS Office: Visit the official WPS website and download the free installation package.
2. Install the Software: Run the installer and follow the quick setup instructions to install WPS Office on your computer.
3. Open Your Files: Launch WPS Office and open your existing Word or Excel documents directly to continue working seamlessly.

Fully compatible with Microsoft Office formats including .docx, .xlsx, and .pptx.Free to use with no mandatory subscriptions or persistent sign-in prompts.Lightweight installation that avoids complex registry and repair loops.Familiar user interface makes it easy to switch without learning new software.

Frequently Asked Questions

Why does Microsoft 365 repeatedly ask me to sign in?

This usually happens when there is a syncing issue with your account credentials, a licensing glitch, or a conflict between multiple Microsoft accounts logged into the same Windows device.

Will running Quick Repair delete my Word or Excel documents?

No. The Quick Repair tool only fixes the core Microsoft Office application files and registry settings. Your personal documents, spreadsheets, and data will remain safe and untouched.

What should I do if Quick Repair doesn't solve the problem?

If Quick Repair fails, you can go back to the 'Modify' menu and select 'Online Repair', which is a more comprehensive fix. If the issue persists, you may need to completely uninstall and reinstall Microsoft 365.

Login & Account Issues